Page 153 - Plant design and economics for chemical engineers

COMPUTER-AIDED DESIGN 127

Inc., is available in main-frame and personal computer versions; many universi-
ties utilize PROCESS. ASPEN PLUSTM, by Aspen Technology, Inc., is available
for main-frame and personal computers. The ASPEN system was developed to
handle solid-liquid-gas processes (such as coal conversions) and is probably the
most versatile of the generally available flow-sheeting programs. ChemShare
Corporation offers DESIGN IITM in a personal computer version. HYSIMTM is
a personal computer flow-sheeting program from Hyprotech Ltd. In addition to

User-supplied information
Flowsheet
Chemical components
Design specifications

Problem definition Physical property data

Unit module data
Cost data
Constructing a solution procedure
I Physical property routines I
km---- - - - - - - - - - - 4
I Unit module routines I
~--s--w--------4

Initial guesses for
Cost routines
f
iteration variables I L ,,------,----A

Calculations Mathematics routines
Physical property routines

Equipment sizing Unit module routines

Cost routines

Economic analysis routines

FIGURE 4-6
Development of a simulation program for a process system.